2 607 523 Exponent Status

Great Internet Mersenne Prime Search
GIMPS
Finding World Record Primes Since 1996

PrimeNet Exponent Status

M_n

Status

Details

Composite, with 2 known prime factors. Cofactor is composite.

Factored

Factor	Digits	Bits	Date
7321011950951	13	42.7	old
1708808079256471232033	22	70.5	2019-02-26 18:58:36

ECM

Digits	B1	Curves
25	50000	150 / 280

Estimated T-Level: 22.7 ⓘ

TF below 2^70 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified (Factored)	2017-10-15	Oliver Kruse	B4ECD0280901134D	1	2272983	5	3
Verified (Factored)	2017-12-02	kkmrkkblmbrbk	B4ECD0280901134D	1	2192037	5	3
Verified	2019-02-26	ATH	B4ECD0280901134D	2	1215389	5	3
Verified	2019-03-15	alex	B4ECD0280901134D	2	2160665	5	3

P-1 factors

Date	Factor	B1	B2
2019-02-26	1708808079256471232033	2000000	60000000

History

Date	User	Type	Result
2019-03-15	alex	C-PRP	M2607523/7321011950951/1708808079256471232033 : B4ECD0280901134D PRP: Verified PRP without proof (not generated)
2019-02-26	ATH	C-PRP	M2607523/7321011950951/1708808079256471232033 : B4ECD0280901134D PRP: Verified PRP without proof (not generated)
2019-02-26	alpertron	F-PM1	Factor: 1708808079256471232033 / (P-1, B1=2000000, B2=60000000, E=12)
2017-12-02	kkmrkkblmbrbk	C-PRP	M2607523/7321011950951 : B4ECD0280901134D PRP: Verified PRP without proof (not generated)
2017-10-15	Oliver Kruse	C-PRP	M2607523/7321011950951 : B4ECD0280901134D PRP: Verified PRP without proof (not generated)